Steam-boiler.



PATENTED JUNE '7, 1904.

H. CARMONT. STEAM BOILER. APPLICATION FILED MAIL l0. 1903 2 SHEETSSHEET1.

N0 MODEL.

. mmfar mzzawdfiarmonf 3].

PATENTED JUNE 7, 1904.

H. CARMONT. STEAM BOILER.

APPLICATION IILLD mam-10. 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

java/afar mzll/aad'firnzald UNITED STATES Patented June 7, 1904.

PATENT OFFICE.

HAZELIVOOD OARMONT, OF KlNGSTON-ON-THAMES, ENGLAND, ASSIGNOR TO WILLIAMEDWARD OARMONT, OF HELMSDALE, KINGSTON-ON- THAMES, ENGLAND, AND THOMASROTHIVELL HASLAM, OF LONDON,

ENGLAND.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 762,137, dated June 7,1904.

Application filed March 10, 1903.

T ctZZ whom it may concern.-

Be it known that I, HAZELWOOD OARMONT, a subject of the King of GreatBritain, residing at Helmsdale, Kingston-on-Thames, county of Surrey,England, have invented certain new and useful Improvements inSteam-Boilers, of which the following is a specification.

The object of this invention is to construct a water-tube steam-boilerin such a manner that the tubes can be easily and readily inspected andall scale or other deposit removed without injury to the tubes or boilerand without impairing the efliciency of the apparatus and to economizefuel and burn smoke and, further, to rapidly heat the water and raisesteam, a single or double circulation of the water being effected in theapparatus.

My invention will be readily understood from the following description,aided by the accompanying drawings, in which Figure 1 is alongitudinalsectional elevation of the steam-boiler on the line /0 w ofFig. 2. Fig. 2 is a cross-section of same; Fig. 3, a sectionalelevation, on an enlarged scale, of

2 5 the tubes in which the water circulates. Fig. 4 is a part-sectionalelevation, on an enlarged scale, of inlet and circulating pipes, showingthe clack-valve. Fig. 5 is a part-sectional elevation of inletandcirculating pipes, the

3 clack-valve being dispensed with.

For the purpose of my invention I form my boiler somewhat of ainverted-V shape, the apex or top being the boiler proper, the sidesbeing tubes. The tubes 2 are connected to the apex or boiler proper, 1,and to the casing 3 at the lower part and are so placed that the tubes 2in each row or ring touch each other. The tubes 2 are secured at eachend, the bottom end short and the top long,

4 which top end projects into the boiler 1 and forms a Wall to preventany sediment in the boiler falling down the tubes. The rows or tubes 2are arranged to have the longest reduced end at top and bottomalternately, so that the heat and products of combustion pass betweenthe reduced portions 4 and then up between two rows or rings of tubes 2and Serial No. 147,130. (No model.)

then through the reduced portions 4 of the next set and down between thesecond and third row or rings of tubes 2, and so on, as will beunderstood by the arrows in Fig. 2,

whereby both sides of each pipe get fully heated. Inside these tubes 2are small diameter tubes or pipes 5, and these reach nearly to thebottom of the outer tubes 2 and project into the boiler 1, the upper endbeing held in position by a holed plate or plates 6 at or above the topof the outer tubes 2.

The reduced ends of the tubes 2 at top and bottom fit in holes of thecasing 3 and boiler 1, and a plate 6 is provided inside the top part ofthe boiler to prevent priming. The bottoms of the tubes 2 are held inposition by a plate 7, secured to the casing. Y

The boiler proper, 1, is formed from a trough, into which the pipes 2are secured in the usual manner. This trough is covered by a cap ortrough 8, so as to form the boiler, the jointing being of a propercharacter to insure a perfect seam without leakage.

The fire-box is formed of coiled tube or tubes 9, through which thewater passes to the boiler by the pipe 10, the inlet to the coil beingat 11; butbetween this inlet 11 and the boiler 1 pipe 12 is arranged,said pipe being provided with a clack-valve 13 (see Fig. A) to preventthe inflowing water passing up the tube 12, but compelling it to passthrough the coil 9, the circulation onl; taking place between the pipes2 5 and the boiler 1; but by dispensing with the clack-valve 13 andcontinuing the supply-pipe 11 past the pipe 12, as shown at Fig. 5, adouble circulation will be createdz'. 0., between the pipes 2 5 and theboiler 1 andbetwecn the coil 9, pipe 10, boiler 1, and pipes 12.

When the clack-valve 13 is employed and the pump is not working, acirculation of water in the coil 9 and boiler 1 is kept up automaticallyby reason of the water ascending the pipe 10 and descending the pipe 12;but when the pump is working the water will not pass the clack-valve 13,but will pass through the coil, and so be heated before it gets to theboiler.

With the construction shown at Fig. 5 a double circulation is alwayskept up whether the pump be at work or not.

The casing 3 is provided with a removable lid or cover 14, so that whenthe tubes require inspection or cleaning all that is necessary is toremove the cap or covers 1 1 and 8 of the boiler 1, when they will beexposed to such an extent that any cleaning or repairs can be readilyand easily effected without in any way interfering with the apparatus.

The circulating-chambers are provided with exit and blow-off pipes 15,so that all sediment can be easily removed.

Chambers may be formed in the casing to superheat exhaust-steam whenrequired, as in motors, and doors maybe provided by which the outside ofthe tubes 2 can be readily inspected and cleansed.

16 is the fire-door opening through which the fuel is fed, the productsof combustion passing up and down between the tubes 2, as beforeexplained, into the casing 3 and through openings 17 between the flanges15, which secure the lid 18 to the boiler 1 into the dome 14 and away bythe flue 19.

The water from the inlet 11, as before stated, passes direct to the coil9 and then up the pipe 10 into the boiler, the water in the boiler alsocirculating down the tube 5 and up the tube 2, so as to be rapidlyheated in transit, the hot water from the boiler passing from the pipe12 and into the coil 9 to complete the circulation.

By this invention a great circulation of water takes place in the boilerproper by reason of the circulation between the boiler and the coiledtubes enhanced by the circulation taking place between the boiler andpipes 2 5, so that the water is never at rest, a feature of greatimportance in rapidly producing and maintaining steam and keeping theboiler clean.

20 is the steam-pipe leading from the boiler l to any motor.

21 represents the fire-bars, and 22 the ashpit.

WVhat I claim, and desire to secure by Letters Patent, is

1. In a tubular steam-boiler, in combination with a suitable lire-box, aboiler located above the fire-box, a series of double tubes supportedabove said fire-box and communicating with said boiler, each of saiddouble tubes comprising an outer tube having a closed outer end, and aninner tube extending into said outer tube, and a pipe coiled within saidfire-box and having terminals communicating with said boiler andprovided with a branch pipe whereby water may be supplied to said coil.

2. In atu bular steam-boiler, in combination with the fire-box and theboiler proper, a series of double tubes communicating with the boilerand extending into the space above the fire-box, said tubes affordingone means of circulation of the water supplied to the boiler, and meansfor affording a second or double circulation of the water, comprising apipe coiled within said fire-box and having terminals communicating withsaid boiler.

3. In a tubular steam-boiler, in combination with the fire-box and theboiler proper, a series of double tubes commumcating w1th said boilerand extending into the space above said fire-box, a pipe coiled withinsaid fire-box and having a terminal communicating with said boiler, aninlet-pipe communicating with said coiled pipe, a branch pipecommunicating with said inlet-pipe for supplying water thereto, and apipe 12 communicating at one end with said inlet-pipe and at its otherend with the boiler, the combination affording a double circulation ofthe water in the boiler, as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

HAZELWOOD CARMONT.

l/Vitnesses:

PERCY E. MATTOOKS, HUGH HUeHEs.

